CVE catalog

CVE-2024-55549

Libxslt vulnerability

Severity: High · CVSS 7.8CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:H
Published: Jan 1, 2024, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.36% · Oct 25, 2026

xsltGetInheritedNsList in libxslt before 1.1.43 has a use-after-free issue related to exclusion of result prefixes.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	libxslt	sid	`1.1.45-0.1`	fixed
Debian	libxslt	forky	`1.1.45-0.1`	fixed
Debian	libxslt	trixie	`1.1.35-1.2+deb13u3`	fixed
Debian	libxslt	trixie-security	`1.1.35-1.2+deb13u2`	fixed
Debian	libxslt	bookworm	`1.1.35-1+deb12u4`	fixed
Debian	libxslt	bookworm-security	`1.1.35-1+deb12u3`	fixed
Ubuntu	libxslt	noble	`1.1.35-1+deb12u1`	fixed
Ubuntu	libxslt	noble	`1.1.39-0exp1ubuntu0.24.04.1`	fixed
Ubuntu	libxslt1-dev	noble	`1.1.39-0exp1ubuntu0.24.04.1`	fixed
Ubuntu	libxslt1.1	noble	`1.1.39-0exp1ubuntu0.24.04.1`	fixed
Ubuntu	xsltproc	noble	`1.1.39-0exp1ubuntu0.24.04.1`	fixed
Alpine	libxslt	3.18	`1.1.38-r1`	fixed
Alpine	libxslt	3.19	`1.1.39-r1`	fixed
Alpine	libxslt	3.20	`1.1.39-r2`	fixed
Alpine	libxslt	3.21	`1.1.42-r2`	fixed
Alpine	libxslt	3.22	`1.1.43-r0`	fixed
Alpine	libxslt	3.23	`1.1.43-r0`	fixed
Alpine	libxslt	3.24	`1.1.43-r0`	fixed
Ubuntu	libxslt	pro	`1.1.29-2.1ubuntu1`	vulnerable
Ubuntu	libxslt	pro	`1.1.29-4`	vulnerable
Ubuntu	libxslt	pro	`1.1.29-5`	vulnerable
Ubuntu	libxslt	pro	`1.1.29-5ubuntu0.1`	vulnerable
Ubuntu	libxslt	pro	`1.1.29-5ubuntu0.2`	vulnerable
Ubuntu	libxslt	pro	`1.1.29-5ubuntu0.3`	vulnerable
Ubuntu	libxslt	pro	`1.1.29-5ubuntu0.3+esm1`	vulnerable
Ubuntu	libxslt	pro	`1.1.29-5ubuntu0.3+esm2`	fixed
Ubuntu	libxslt	pro	`1.1.29-2.1ubuntu1`	vulnerable
Ubuntu	libxslt	pro	`1.1.29-4`	vulnerable
Ubuntu	libxslt	pro	`1.1.29-5`	vulnerable
Ubuntu	libxslt	pro	`1.1.29-5ubuntu0.1`	vulnerable
Ubuntu	libxslt	pro	`1.1.29-5ubuntu0.2`	vulnerable
Ubuntu	libxslt	pro	`1.1.29-5ubuntu0.3`	vulnerable
Ubuntu	libxslt	pro	`1.1.29-5ubuntu0.3+esm1`	vulnerable
Ubuntu	libxslt	pro	`1.1.29-5ubuntu0.3+esm2`	fixed
Ubuntu	libxslt	20.04	`1.1.33-0ubuntu1`	vulnerable
Ubuntu	libxslt	20.04	`1.1.33-0ubuntu2`	vulnerable
Ubuntu	libxslt	20.04	`1.1.33-0ubuntu3`	vulnerable
Ubuntu	libxslt	20.04	`1.1.34-1`	vulnerable
Ubuntu	libxslt	20.04	`1.1.34-1ubuntu1`	vulnerable
Ubuntu	libxslt	20.04	`1.1.34-3`	vulnerable
Ubuntu	libxslt	20.04	`1.1.34-4`	vulnerable
Ubuntu	libxslt	20.04	`1.1.34-4ubuntu0.20.04.1`	vulnerable
Ubuntu	libxslt	20.04	`1.1.34-4ubuntu0.20.04.2`	fixed
Ubuntu	libxslt	22.04	`1.1.34-4`	vulnerable
Ubuntu	libxslt	22.04	`1.1.34-4build1`	vulnerable
Ubuntu	libxslt	22.04	`1.1.34-4build2`	vulnerable
Ubuntu	libxslt	22.04	`1.1.34-4ubuntu0.22.04.1`	vulnerable
Ubuntu	libxslt	22.04	`1.1.34-4ubuntu0.22.04.2`	fixed
Ubuntu	libxslt	24.04	`1.1.35-1`	vulnerable
Ubuntu	libxslt	24.04	`1.1.39-0exp1`	vulnerable
Ubuntu	libxslt	24.04	`1.1.39-0exp1build1`	vulnerable
Ubuntu	libxslt	24.04	`1.1.39-0exp1ubuntu0.24.04.1`	fixed
Ubuntu	libxslt	20.04	`1.1.33-0ubuntu1`	vulnerable
Ubuntu	libxslt	20.04	`1.1.33-0ubuntu2`	vulnerable
Ubuntu	libxslt	20.04	`1.1.33-0ubuntu3`	vulnerable
Ubuntu	libxslt	20.04	`1.1.34-1`	vulnerable
Ubuntu	libxslt	20.04	`1.1.34-1ubuntu1`	vulnerable
Ubuntu	libxslt	20.04	`1.1.34-3`	vulnerable
Ubuntu	libxslt	20.04	`1.1.34-4`	vulnerable
Ubuntu	libxslt	20.04	`1.1.34-4ubuntu0.20.04.1`	vulnerable
Ubuntu	libxslt	20.04	`1.1.34-4ubuntu0.20.04.2`	fixed
Ubuntu	libxslt	22.04	`1.1.34-4`	vulnerable
Ubuntu	libxslt	22.04	`1.1.34-4build1`	vulnerable
Ubuntu	libxslt	22.04	`1.1.34-4build2`	vulnerable
Ubuntu	libxslt	22.04	`1.1.34-4ubuntu0.22.04.1`	vulnerable
Ubuntu	libxslt	22.04	`1.1.34-4ubuntu0.22.04.2`	fixed
Ubuntu	libxslt	24.04	`1.1.35-1`	vulnerable
Ubuntu	libxslt	24.04	`1.1.39-0exp1`	vulnerable
Ubuntu	libxslt	24.04	`1.1.39-0exp1build1`	vulnerable
Ubuntu	libxslt	24.04	`1.1.39-0exp1ubuntu0.24.04.1`	fixed
Suse	libxslt	linux enterprise server 12 sp5-ltss	`1.1.28-17.18.1`	fixed
Suse	libxslt	linux enterprise server ltss extended security 12 sp5	`1.1.28-17.18.1`	fixed
Opensuse	libxslt	tumbleweed	`1.1.43-1.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	libxslt	source	sid	`1.1.35-1.2`	not yet assigned	Not reported	[1100565]
Debian	libxslt	source	forky	`1.1.35-1.2`	not yet assigned	Not reported	[1100565]
Debian	libxslt	source	trixie	`1.1.35-1.2`	not yet assigned	Not reported	[1100565]
Debian	libxslt	source	bookworm	`1.1.35-1+deb12u1`	not yet assigned	Not reported	[1100565]
Ubuntu	libxslt	deb	noble	`1.1.35-1+deb12u1`	Not reported	Not reported	Not reported
Ubuntu	libxslt	deb	noble	`1.1.39-0exp1ubuntu0.24.04.1`	Not reported	Not reported	Not reported
Ubuntu	libxslt1-dev	deb	noble	`1.1.39-0exp1ubuntu0.24.04.1`	Not reported	Not reported	Not reported
Ubuntu	libxslt1.1	deb	noble	`1.1.39-0exp1ubuntu0.24.04.1`	Not reported	Not reported	Not reported
Ubuntu	xsltproc	deb	noble	`1.1.39-0exp1ubuntu0.24.04.1`	Not reported	Not reported	Not reported
Alpine	libxslt	apk	3.18	`1.1.38-r1`	Not reported	ALPINE-CVE-2024-55549	Not reported
Alpine	libxslt	apk	3.19	`1.1.39-r1`	Not reported	ALPINE-CVE-2024-55549	Not reported
Alpine	libxslt	apk	3.20	`1.1.39-r2`	Not reported	ALPINE-CVE-2024-55549	Not reported
Alpine	libxslt	apk	3.21	`1.1.42-r2`	Not reported	ALPINE-CVE-2024-55549	Not reported
Alpine	libxslt	apk	3.22	`1.1.43-r0`	Not reported	ALPINE-CVE-2024-55549	Not reported
Alpine	libxslt	apk	3.23	`1.1.43-r0`	Not reported	ALPINE-CVE-2024-55549	Not reported
Alpine	libxslt	apk	3.24	`1.1.43-r0`	Not reported	ALPINE-CVE-2024-55549	Not reported
Ubuntu	libxslt	deb	pro	`1.1.29-5ubuntu0.3+esm2`	Not reported	USN-7787-1	Not reported
Ubuntu	libxslt	deb	pro	`1.1.29-5ubuntu0.3+esm2`	Not reported	UBUNTU-CVE-2024-55549	Not reported
Ubuntu	libxslt	deb	20.04	`1.1.34-4ubuntu0.20.04.2`	Not reported	UBUNTU-CVE-2024-55549	Not reported
Ubuntu	libxslt	deb	22.04	`1.1.34-4ubuntu0.22.04.2`	Not reported	UBUNTU-CVE-2024-55549	Not reported
Ubuntu	libxslt	deb	24.04	`1.1.39-0exp1ubuntu0.24.04.1`	Not reported	UBUNTU-CVE-2024-55549	Not reported
Ubuntu	libxslt	deb	20.04	`1.1.34-4ubuntu0.20.04.2`	Not reported	USN-7357-1	Not reported
Ubuntu	libxslt	deb	22.04	`1.1.34-4ubuntu0.22.04.2`	Not reported	USN-7357-1	Not reported
Ubuntu	libxslt	deb	24.04	`1.1.39-0exp1ubuntu0.24.04.1`	Not reported	USN-7357-1	Not reported
Suse	libxslt	rpm	linux enterprise server 12 sp5-ltss	`1.1.28-17.18.1`	Not reported	SUSE-SU-2025:1494-1	Not reported
Suse	libxslt	rpm	linux enterprise server ltss extended security 12 sp5	`1.1.28-17.18.1`	Not reported	SUSE-SU-2025:1494-1	Not reported
Opensuse	libxslt	rpm	tumbleweed	`1.1.43-1.1`	Not reported	OPENSUSE-SU-2025:14894-1	Not reported

[Debian bug #1100565]

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[libxslt1.1]Unknown
Source package: [libxslt]
Details (4)
- 1.1.35-1+deb12u4 · amd64 · bookworm
  Fixed · Fixed: 1.1.35-1+deb12u1
  usn · libxslt · debian · bookworm; usn · libxslt · debian · 12
- 1.1.35-1+deb12u4 · arm64 · bookworm
  Fixed · Fixed: 1.1.35-1+deb12u1
  usn · libxslt · debian · bookworm; usn · libxslt · debian · 12
- 1.1.35-1+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 1.1.35-1+deb12u1
  usn · libxslt · debian · bookworm; usn · libxslt · debian · 12
- 1.1.35-1+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 1.1.35-1+deb12u1
  usn · libxslt · debian · bookworm; usn · libxslt · debian · 12
[libxslt1-dev]Unknown
Source package: [libxslt]
Details (4)
- 1.1.35-1+deb12u4 · amd64 · bookworm
  Fixed · Fixed: 1.1.35-1+deb12u1
  usn · libxslt · debian · bookworm; usn · libxslt · debian · 12
- 1.1.35-1+deb12u4 · arm64 · bookworm
  Fixed · Fixed: 1.1.35-1+deb12u1
  usn · libxslt · debian · bookworm; usn · libxslt · debian · 12
- 1.1.35-1+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 1.1.35-1+deb12u1
  usn · libxslt · debian · bookworm; usn · libxslt · debian · 12
- 1.1.35-1+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 1.1.35-1+deb12u1
  usn · libxslt · debian · bookworm; usn · libxslt · debian · 12
[xsltproc]Unknown
Source package: [libxslt]
Details (4)
- 1.1.35-1+deb12u4 · amd64 · bookworm
  Fixed · Fixed: 1.1.35-1+deb12u1
  usn · libxslt · debian · bookworm; usn · libxslt · debian · 12
- 1.1.35-1+deb12u4 · arm64 · bookworm
  Fixed · Fixed: 1.1.35-1+deb12u1
  usn · libxslt · debian · bookworm; usn · libxslt · debian · 12
- 1.1.35-1+deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 1.1.35-1+deb12u1
  usn · libxslt · debian · bookworm; usn · libxslt · debian · 12
- 1.1.35-1+deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 1.1.35-1+deb12u1
  usn · libxslt · debian · bookworm; usn · libxslt · debian · 12

[Debian 13 (Trixie)]

[libxslt1.1]Unknown
Source package: [libxslt]
Details (4)
- 1.1.35-1.2+deb13u3 · amd64 · trixie
  Fixed · Fixed: 1.1.35-1.2
  usn · libxslt · debian · 13
- 1.1.35-1.2+deb13u3 · arm64 · trixie
  Fixed · Fixed: 1.1.35-1.2
  usn · libxslt · debian · 13
- 1.1.35-1.2+deb13u2 · amd64 · trixie-security
  Fixed · Fixed: 1.1.35-1.2
  usn · libxslt · debian · 13
- 1.1.35-1.2+deb13u2 · arm64 · trixie-security
  Fixed · Fixed: 1.1.35-1.2
  usn · libxslt · debian · 13
[libxslt1-dev]Unknown
Source package: [libxslt]
Details (4)
- 1.1.35-1.2+deb13u3 · amd64 · trixie
  Fixed · Fixed: 1.1.35-1.2
  usn · libxslt · debian · 13
- 1.1.35-1.2+deb13u3 · arm64 · trixie
  Fixed · Fixed: 1.1.35-1.2
  usn · libxslt · debian · 13
- 1.1.35-1.2+deb13u2 · amd64 · trixie-security
  Fixed · Fixed: 1.1.35-1.2
  usn · libxslt · debian · 13
- 1.1.35-1.2+deb13u2 · arm64 · trixie-security
  Fixed · Fixed: 1.1.35-1.2
  usn · libxslt · debian · 13
[xsltproc]Unknown
Source package: [libxslt]
Details (4)
- 1.1.35-1.2+deb13u3 · amd64 · trixie
  Fixed · Fixed: 1.1.35-1.2
  usn · libxslt · debian · 13
- 1.1.35-1.2+deb13u3 · arm64 · trixie
  Fixed · Fixed: 1.1.35-1.2
  usn · libxslt · debian · 13
- 1.1.35-1.2+deb13u2 · amd64 · trixie-security
  Fixed · Fixed: 1.1.35-1.2
  usn · libxslt · debian · 13
- 1.1.35-1.2+deb13u2 · arm64 · trixie-security
  Fixed · Fixed: 1.1.35-1.2
  usn · libxslt · debian · 13

[openSUSE Tumbleweed]

[libexslt0]Unknown
Source package: [libxslt]
Details (1)
- 1.1.45-1.4 · x86_64 · tumbleweed
  Unknown · Fixed: 1.1.43-1.1
  Version impact unknown
  usn · libxslt · opensuse · tumbleweed
[libxslt1]Unknown
Source package: [libxslt]
Details (1)
- 1.1.45-1.4 · x86_64 · tumbleweed
  Unknown · Fixed: 1.1.43-1.1
  Version impact unknown
  usn · libxslt · opensuse · tumbleweed
[libxslt1-32bit]Unknown
Source package: [libxslt]
Details (1)
- 1.1.45-1.4 · x86_64 · tumbleweed
  Unknown · Fixed: 1.1.43-1.1
  Version impact unknown
  usn · libxslt · opensuse · tumbleweed
[libxslt-devel]Unknown
Source package: [libxslt]
Details (1)
- 1.1.45-1.4 · x86_64 · tumbleweed
  Unknown · Fixed: 1.1.43-1.1
  Version impact unknown
  usn · libxslt · opensuse · tumbleweed
[libxslt-devel-32bit]Unknown
Source package: [libxslt]
Details (1)
- 1.1.45-1.4 · x86_64 · tumbleweed
  Unknown · Fixed: 1.1.43-1.1
  Version impact unknown
  usn · libxslt · opensuse · tumbleweed
[libxslt-tools]Unknown
Source package: [libxslt]
Details (1)
- 1.1.45-1.4 · x86_64 · tumbleweed
  Unknown · Fixed: 1.1.43-1.1
  Version impact unknown
  usn · libxslt · opensuse · tumbleweed

Observed: Oct 24, 2026, 11:27:15 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]